开采大型露天矿时,随着延深,剥岩量的波动很大,这将打乱工作的节奏性,降低开采效果,并在许多情况下导致剥离工作大大落后。为减少露天矿投产前的早期基建费,设计中一般是推荐由矿床中央向上下盘两帮的极限边界开采。因此,许多正在生产 As large open-pit mines are mined, the amount of rock removal varies widely with depth and this can disrupt the pace of work, reduce the effectiveness of the extraction and, in many cases, lead to a significant lag in stripping. In order to reduce the cost of early construction of open-pit mines before they are put into operation, it is generally recommended to design the limit boundary mining from the center of the deposit to the upper and lower plates. Therefore, many are in production